<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title></title>
    <script src="elementui/vue.js"></script>
    <script src="elementui/index.js"></script>
    <link rel="stylesheet" href="elementui/index.css">
</head>
<body>
    <div id="app">
        <!--el-menu:上级菜单
            el-submenu:下级菜单
        -->
        <el-menu
                default-active="2"
                class="el-menu-vertical-demo"
                @open="handleOpen"
                @close="handleClose">
            <el-submenu index="1">
                <template slot="title">
                    <i class="el-icon-location"></i>
                    <span>导航一</span>
                </template>
                <el-menu-item-group>
                    <template slot="title">分组一</template>
                    <el-menu-item index="1-1">选项1</el-menu-item>
                    <el-menu-item index="1-2">选项2</el-menu-item>
                </el-menu-item-group>
                <el-menu-item-group title="分组2">
                    <el-menu-item index="1-3">选项3</el-menu-item>
                </el-menu-item-group>
                <el-submenu index="1-4">
                    <template slot="title">选项4</template>
                    <el-menu-item index="1-4-1">选项1</el-menu-item>
                </el-submenu>
            </el-submenu>
            <el-menu-item index="2">
                <i class="el-icon-menu"></i>
                <span slot="title">导航二</span>
            </el-menu-item>
            <el-menu-item index="3" disabled>
                <i class="el-icon-document"></i>
                <span slot="title">导航三</span>
            </el-menu-item>
            <el-menu-item index="4">
                <i class="el-icon-setting"></i>
                <span slot="title">导航四</span>
            </el-menu-item>
        </el-menu>
    </div>
    <script>
        new Vue({
            el:"#app", //div id=app的区域受vue管理
            methods: {//js第5个版本 当前警告信息是js第6个版本的提示
                handleOpen(key, keyPath) {
                    console.log(key, keyPath);
                },
                handleClose(key, keyPath) {
                    console.log(key, keyPath);
                }
            }
        })
    </script>
</body>
</html>